Abstract
In order to investigate the effect of crystallographic orientation on the nano-indentation behaviors of single crystal super alloys, the nano-indentation experiments were carried out using a Berkovich indenter with an atomic force microscope. The specimens are nickel based single crystal super alloys with crystallographic orientations of [001], [011] and [111]. Experimental results show that the indentation load-depth curve, hardness and elastic modulus are remarkably influenced by crystallographic orientation. It is found that the shape and volume fraction of γ' strengthening phase are dependent on crystallographic orientation, which will influence the mechanical properties. The nano-indentation experiments performed on three typical crystallographic orientations are simulated by crystal plasticity theory to investigate the indentation responses and the resolved shear stress, and the simulation results show a good agreement with the experiment results.
| Translated title of the contribution | Effect of Crystallographic Orientation on Nano-indentation Behavior of Nickel Based Single Crystal Super Alloys |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 1854-1859 |
| Number of pages | 6 |
| Journal | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
| Volume | 49 |
| Issue number | 6 |
| State | Published - 1 Jun 2020 |